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Hydrogen generation, naphthalene

In the present estimation, a continuous dehydrogenation reactor in which decalin is supplied to the catalyst at various feed rates without internal refluxing is assumed. Here all the condensable products and unconverted decalin were removed from the reactor to the condensation part (see Figure 13.22). Now, the stationary rates of hydrogen generation (VH), naphthalene formation (VN), and evaporation of unconverted decalin (VD) are defined as the magnitudes per area of the catalyst layer (mol/m2h). All these rates are expressed from mass balance as follows . [Pg.460]

As shown in Table 13.1, toluene is a candidate compound to form the naphthalene oil. To utilize the reaction pair of methylcyclohexane dehydrogenation/toluene hydrogenation as an additive component, it is, thus, necessary to generate hydrogen efficiently from methylcyclohexane under mild reaction conditions. [Pg.449]

The addition of alkyl halides to aromatic anion radicals, generated by alkalimetal reduction in ethereal solvents, was already known in the 1950s [201] and was reviewed by Garst in 1971 [202]. The first electrochemical analogue was observed by Lund etal. [203]. These authors cathodically reduced hydrocarbons such as naphthalene, anthracene, stilbene [145, 146], and pery-lene [147-150] in the presence of alkyl halides and isolated hydrogenated and alkylated products. Similar reactions are observed when the halides are replaced by ammonium or sulfonium [204]. [Pg.113]

Further application of the in-situ generation of chiral quaternary ammonium fluorides from the corresponding hydrogen sulfates has also been shown in the facile preparation of optically active esters via the alkylative kinetic resolution of secondary alkyl halides. For example, simple stirring of the mixture of 3-phenylpropionic acid, l-(l-bromoethyl)naphthalene, (S,S)-6b (X = HS04 2 mol%) and KF-2H20 (5 equiv.)... [Pg.191]

Although the attack of nucleophiles upon aromatic rings in the gas phase was reported more than a decade ago, not many publications on this topic have appeared since then. Thus, it was shown in earlier work that alkoxide ions react with fluorobenzene to give F and with hexafluoro-benzene to give pentafluorophenoxide anions (Briscese and Riveros, 1975), that (M + N02) adducts can be formed from reaction of N02 with < -, m-and /7-dinitrobenzenes (Bowie and Stapleton, 1977) and that (M — H + 0) ions are generated in reactions of Ot ions with benzene, naphthalene, pyridine, alkylbenzenes, methylpyridines and fluorotoluenes by displacement of a ring hydrogen atom (Bruins et al., 1978). [Pg.28]


See other pages where Hydrogen generation, naphthalene is mentioned: [Pg.446]    [Pg.446]    [Pg.449]    [Pg.450]    [Pg.455]    [Pg.178]    [Pg.464]    [Pg.550]    [Pg.133]    [Pg.186]    [Pg.40]    [Pg.443]    [Pg.447]    [Pg.453]    [Pg.397]    [Pg.397]    [Pg.458]    [Pg.41]    [Pg.283]    [Pg.4]    [Pg.186]    [Pg.257]    [Pg.684]    [Pg.303]    [Pg.580]    [Pg.962]    [Pg.483]    [Pg.354]    [Pg.580]    [Pg.535]    [Pg.628]    [Pg.629]    [Pg.1048]    [Pg.463]    [Pg.335]    [Pg.43]    [Pg.853]    [Pg.237]    [Pg.498]    [Pg.535]    [Pg.628]    [Pg.629]    [Pg.1048]    [Pg.175]    [Pg.181]   
See also in sourсe #XX -- [ Pg.446 ]




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